Skip to main content
U.S. flag

An official website of the United States government

Pyrite-uranium polycrystal

January 1, 1994

A texture was observed in a sample of ore in 'Which pyrite and uraninite occurred as thin alternate layers paralleling crystal faces of a pyrite nucleus. This texture could be formed either by replacement or by syntaxis. Although syntactic growth forming polyerystals of two chemically dissimilar minerals has not been previously described, this explanation fits the observed data better than the explanation offered by replacement. It is proposed, therefore, that this occurrence is an example of a polycrystal of uraninite and pyrite and that the mechanism of formation is syntaxis.

Citation Information

Publication Year 1956
Title Pyrite-uranium polycrystal
DOI 10.3133/tem1012
Authors A.G. King
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Trace Elements Memorandum
Series Number 1012
Index ID tem1012
Record Source USGS Publications Warehouse
USGS Organization